Sinon usage problem example

sinonUsageProblem.js

const sinon = require("sinon");
const auth = { session: () => "real" };
sinon.stub(auth, "session").callsFake(() => {
  return "fake";
});
console.log(auth.session());// fake as expected
const holdSession = auth.session;//hapens in app.js app.use(auth.session);
sinon.restore();
console.log(auth.session()); // real as expected
console.log(holdSession()); // fake ... UNEXPECTED!